llvm/llvm/test/CodeGen/WebAssembly/simd-build-pair.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -verify-machineinstrs -disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals -wasm-keep-registers -mattr=simd128 | FileCheck %s

target triple = "wasm32-unknown-unknown"

; Test that BUILD_PAIR dag nodes are correctly lowered.
; This code produces a selection DAG like the following:

;    t0: ch = EntryToken
;  t3: v4i32,ch = load<(load 16 from `ptr undef`)> t0, undef:i32, undef:i32
;        t30: i32 = extract_vector_elt t3, Constant:i32<2>
;        t28: i32 = extract_vector_elt t3, Constant:i32<3>
;      t24: i64 = build_pair t30, t28
;    t8: ch = store<(store 8 into `ptr undef`, align 1)> t3:1, t24, undef:i32, undef:i32
;  t9: ch = WebAssemblyISD::RETURN t8

define void @build_pair_i32s() {
; CHECK-LABEL: build_pair_i32s:
; CHECK:         .functype build_pair_i32s () -> ()
; CHECK-NEXT:  # %bb.0: # %entry
; CHECK-NEXT:    v128.load $push0=
; CHECK-NEXT:    i8x16.shuffle $push1=
; CHECK-NEXT:    v128.store64_lane
; CHECK-NEXT:    return
entry:
  %0 = load <4 x i32>, ptr undef, align 16
  %shuffle.i184 = shufflevector <4 x i32> %0, <4 x i32> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
  %bc357 = bitcast <4 x i32> %shuffle.i184 to <2 x i64>
  %1 = extractelement <2 x i64> %bc357, i32 0
  store i64 %1, ptr undef, align 1
  ret void
}